How do I turn off constraints in SQL Developer?
Oracle / PLSQL: Disable a foreign key
- Description. Once you have created a foreign key in Oracle, you may encounter a situation where you are required to disable the foreign key.
- Syntax. The syntax to disable a foreign key in Oracle/PLSQL is: ALTER TABLE table_name DISABLE CONSTRAINT constraint_name;
- Example.
How do I disable all constraints in Oracle for one schema?
Best Answer begin for all_cons in ( select table_name, constraint_name from user_constraints where constraint_type in (‘U’, ‘P’, ‘R’) ) loop execute immediate ‘alter table ‘||all_cons||’ disable constraint ‘||all_cons. constraint_name; end loop; end; Note that this only does the relational constraints.
How do you disable all the referenced foreign keys and the primary or unique key?
In order to disable all foreign keys that depend on a particular table’s primary key, simply disable primary key with cascade clause and then re-enable(if you need to) it again.
How to resolve ORA 04020?
(1) create table and create trigger on the table. (3) executing a DML (that requires the trigger to be recompiled at DML time) can generate a self deadlock ORA-04020 situation. The workaround consists of recompiling the triggers before executing the DML.
How do I disable a constraint?
To disable a foreign key constraint for INSERT and UPDATE statements
- In Object Explorer, expand the table with the constraint and then expand the Keys folder.
- Right-click the constraint and select Modify.
- In the grid under Table Designer, select Enforce Foreign Key Constraint and select No from the drop-down menu.
How temporarily disable constraints in Oracle?
There are multiple ways to disable constraints in Oracle. constraint_name; Another way to enable and disable constraints in Oracle would be to either use a plsql block or write a script. Execute Immediate ‘alter table ‘||:tab_name||’ disable constraint ‘||tabCons(numCount);